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The Hyperloop is a conceptual high-speed transportation system put forward by entrepreneur Elon Musk,〔〔 incorporating reduced-pressure tubes in which pressurized capsules ride on an air cushion driven by linear induction motors and air compressors.〔 , designs for test tracks and capsules are being developed, with construction of a full-scale prototype scheduled for 2016.〔 A preliminary design document was made public in August 2013, which included a suggested route running from the Los Angeles region to the San Francisco Bay Area, paralleling the Interstate 5 corridor for most of its length. Preliminary analysis indicated that such a route might obtain an expected journey time of 35 minutes, meaning that passengers would traverse the route at an average speed of around , with a top speed of . Cost estimates were for a passenger-only version, and for a version transporting passengers and vehicles.〔 The cost projections for the suggested California route were questioned by transportation engineers in 2013, who found the sum unrealistically low given the scale of construction and reliance on unproven technology. The technological and economic feasibility of the idea is unproven and a subject of significant debate.〔〔〔〔 == History == Elon Musk first mentioned that he was thinking about a concept for a "fifth mode of transport", calling it the ''Hyperloop'', in July 2012 at a PandoDaily event in Santa Monica, California. He described several characteristics of what he wanted in a hypothetical high-speed transportation system: immunity to weather, cars that never experience crashes, an average speed twice that of a typical jet, low power requirements, and the ability to store energy for 24-hour operations.〔 Musk has likened the Hyperloop to a "cross between a Concorde and a railgun and an air hockey table,"〔 while noting that it has no need for rails.〔〔 He believes it could work either below or above ground.〔 From late 2012 until August 2013, an informal group of engineers at both Tesla and SpaceX worked on the conceptual foundation and modelling of Hyperloop, allocating some full-time effort to it toward the end.〔 An early design for the system was then published in a white paper posted to the Tesla and SpaceX blogs.〔〔 Musk has also said he invites feedback to "see if the people can find ways to improve it"; it will be an open source design, with anyone free to use and modify it.〔 The following day he announced a plan to construct a demonstration of the concept.〔 In January 2015, Musk announced that he would construct a Hyperloop test track, which may be located in Texas. The track would be a loop of around in length and would be entirely privately funded. It would allow university and private teams to test and refine different transport pod designs.〔〔 In June 2015, SpaceX announced that it would build a test track to be located next to SpaceX's Hawthorne facility. The track would be used to test pod designs supplied by third parties that are entered into a design competition.〔〔 Construction on a Hyperloop test track is to start on a Hyperloop Transportation Technologies-owned site in Quay Valley in 2016.〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hyperloop」の詳細全文を読む スポンサード リンク
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